KR960001584B1 - A method for cleansing gases and the apparatus therefor - Google Patents

Abstract

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Description

[Name of invention]

Gas purification method and apparatus

[Brief Description of Drawings]

1 is a longitudinal sectional view of a first embodiment of a gas purifier of the present invention.

2 is a plan cross-sectional view taken along line II-II of FIG.

FIG. 3 is a partial excerpt of FIG. 1 showing an interaction relationship with a collision plate or an impact plate which are disposed to face upwardly in an outlet.

4 is a longitudinal sectional view of a second embodiment of a gas purifier of the present invention.

FIG. 5 is a plan cross-sectional view taken along line V-V of FIG. 4. FIG.

FIG. 6 is an enlarged fragmentary view of a partition provided with an inclined sedimentation thin plate separating the bubbles and particles from the cleaning solution to be recycled.

7 to 9 are partial excerpts showing mutually different relations of the third embodiment of the gas purifying apparatus of the present invention.

10 is an enlarged cross-sectional view of the venturi tube used in the gas purifying apparatus of the present invention.

Detailed description of the invention

Technical Field of the Invention

The present invention relates to a method for purifying a gas containing solid, liquid and / or gaseous impurities and an apparatus for carrying out the method.

Background of the Invention

The present invention is an emergency that can operate even in the event of an accident that releases harmful gaseous pollutants in, for example, a nuclear power plant, chemical industry or its industry, or even in the event of an outage in such an industry. It can be used especially as a countermeasure.

Of course, the present invention can also be used during normal operating conditions, such as operating a plant or during a manufacturing process.

The present invention has been developed in accordance with special requirements to be installed as a safety device in an emergency in both sides of the function and structure.

The device of the present invention is durable and capable of operating for at least 10 years and can be operated immediately and effectively in an emergency. In addition, it has the advantage as an emergency device that can be operated independently and automatically without manual operation or power supply in an emergency.

Emergency units installed in nuclear power plants require special requirements to extract radioactive particles and gases that are released as a result of accidents in operation, and the following conditions can be exemplified. Can be.

-No power supply.

-No adjustment or monitoring by the driver.

-Be able to operate for a long time without power input.

-The whole driving period should be several days.

Absorb gas and extract dust particles.

-High efficiency should be maintained even if the flow range is wide.

The above requirement can be fulfilled as a safety device as a filtration device consisting of a very large stone bed, in which dust is extracted through physical phenomena, ie sedimentation and diffusion, but the particle size is 0.5-. It works only at about 10 μm, and the filtration device is large in size and high in cost, and the extraction efficiency is low for fine particles, especially particles smaller than 0.5 microns. Absorbed by the stone, the efficiency is reduced even in gas separation.

The present invention is clearly different from the above known filtration apparatus, and uses a wet purifier that introduces a contaminated gas to a position below the surface of the cleaning solution.

The filtration device or separation device has a watertight function of sealing the space portion with water so that the space portion is blocked from the surrounding atmosphere when an excessive pressure is applied to the space portion or chamber connected to the gas purifier.

In order to increase the efficiency of the wet gas purification device, it is necessary to perfectly mix the cleaning solution and the gas in the device, so that the cleaning solution must diffuse into the gas in the form of fine liquid bubbles and / or the gas is small. The cleaning solution must be passed through the bubble state.

In addition, the purification efficiency of the wet gas purification device mainly depends on the flow rate of the gas flowing below the surface of the cleaning solution, and the best purification effect can be obtained only within a relatively narrow range of the flow rate.

The above facts raise serious problems in terms of the requirement of being able to cope with the changing amount of gas flow without the need for monitoring or adjustment among the requirements of the emergency device.

The purifier disclosed in German patent DE-PS-228,733 distributes the incoming gas stream into several fractions and finely distributes them towards the impingement or impact plates.

However, this device had a defect that the efficiency was poor because the bubble passing through the cleaning solution became a relatively large bubble when the gas flow amount was small.

Wet gas purifiers disclosed in US Pat. Nos. US-A-3,216,181 (see FIG. 4), US-A-3,520,113 (see FIG. 7), and US-A-4,182,617 (see FIG. 2) or the like are provided below the surface of the cleaning solution. The gas is introduced through a plurality of inlets arranged to deepen gradually, and the first outlet is opened by lowering the surface of the cleaning solution of the inlet pipe by increasing the flow amount and inlet pressure of the inlet gas. To flow.

As the flow rate and inflow pressure of the gas increases, the surface of the cleaning solution gradually descends to open more outlets, so that the gas is distributed through it and flows in the form of fractionation. In this way, all flow is through the outlet regardless of the inlet pressure and all flow through the gas purifier.

In the known gas purifying apparatus, since the surface of the cleaning solution in the inlet pipe is lowered to the lower side of the inlet pipe, the gas is relatively large bubbles because the gas is discharged into the cleaning solution with little force and without pressure drop. It is discharged into the cleaning solution in the form of and rises, and as a result, there is a defect that the separation of fine particles or gaseous contaminants becomes relatively poor.

Such a gas purification device is not entirely satisfactory as an emergency countermeasure device used to separate very harmful particles from contaminated gas, for example, in the event of an accident of a nuclear power plant.

[Initiation of invention]

An object of the present invention is to remove the above-mentioned defects of the prior art to granulate contaminants, in particular to extract effectively as fine particles, to extract gaseous contaminants, and to supply power from an external power source. It is to provide a gas purification method that can be operated without any.

In the gas purification method of the present invention, the separation of contaminants can be carried out essentially regardless of the gas flow amount.

Still another object of the present invention is to provide a gas purifying method of the present invention, which is simple in structure, inexpensive to manufacture, and which can be operated without the installation of mechanical attachments and the help of an operator.

The device is also configured to allow for the removal of contaminants after use.

Thus, the method related to the present invention is constructed on the basis of the features described in claim 1, and the apparatus of the present invention is constructed on the basis of the features described in the basic section of the device of the claims.

When using the apparatus of the present invention, the method according to the present invention can achieve a constant high gas purification efficiency irrespective of the total flow rate of the gas, which is an inlet in which contaminated gas is sequentially deeply disposed below the surface of the cleaning solution. As it passes through the outlet and corresponds to the upper side of the inlet and is disposed at an appropriate height, a pressure drop inevitably occurs corresponding to the height difference between the inlet and the outlet when the polluted gas passes through the discharge nozzle. In this manner, a predetermined pressure drop is generated when gas passes through the end of the outlet to effectively perform the purification.

Since the dispensing device is completely immersed in the cleaning solution from the high inlet to the low one, and the inlet is open, when the inlet pressure of the gas is reduced in the dispensing device (= end of emergency), the cleaning solution flows in. The cleaning solution is filled so that the cleaning solution seals some or all of the open inlets.

In the best embodiment of the present invention, the discharge nozzle is in the form of a venturi nozzle, and a plurality of suction ports are laid on one wall to surround the cleaning solution.

This eliminates the necessity of dividing the inlet pipe of the cleaning solution and keeps the supply of the cleaning solution to the venturi nozzle constant.

According to the present invention, even if the variation range of the inflow amount of the inflow gas is wide, the cleaning solution is bubbled by suction, so that the particles can be separated with high efficiency.

The gaseous contaminants are dissolved and separated in the cleaning solution and / or are dissolved in the cleaning solution by reaction with a substance component contained in the cleaning solution.

According to the present invention, since the contained substances or components in the gas are separated during the operation of the purifier and the gas is effectively extracted through the gas purifier at the gas pressure, the apparatus is operated completely independently without an external power source. will be.

The purifier of the present invention can also be used as a separator in the apparatus industry.

When the inlet pressure of the polluted gas is too low when used as a general industrial purification device, it can be used in combination with the exhaust blower or a corresponding device. Also, when the inlet pressure of the gas is not too low, such a device can be combined. The device of the present invention can be used for separation purposes.

In addition, the vessel of the gas purifier is convenient to manufacture a pressure vessel so that its outer wall can withstand the pressure generated.

It is also preferable that the guide partition of the apparatus of the present invention forms a circulation channel below the outlet of the polluting gas near the surface of the cleaning solution.

In addition, the rising bubbles are those which rise to the air levitation circulates the cleaning solution.

This circulation causes local consumption or shortage of the cleaning additives in the cleaning solution, but at the bottom of the separator, the cleaning solution becomes an inactive part, which is raised by the circulation to replenish the consumption of the cleaning additive and simultaneously cool down. It will also effect.

The invention is described in detail in the illustrative embodiments and not by way of example with reference to the accompanying drawings.

BEST MODE FOR CARRYING OUT THE INVENTION

1 to 3 schematically show the gas purifying apparatus of the present invention.

The pressure vessel 1 of this apparatus consists of an outer wall 10, a bottom face 11 and a cover or cover 13, and also an inlet pipe 12, a distribution device 14 and an outlet 16.

The dispensing device 14 is composed of a plurality of dispensing tubes 18 extending radially downwardly inclined and consisting of six in the embodiment shown in the drawings.

The distribution pipe 18 has an opening 22 extending downwardly and vertically outward and opening downwardly at its end. In addition, a plurality of upper pipes 24 are disposed on the inclinedly extending portion of each distribution pipe 18, and the side distribution pipes 26 extending laterally are welded to each other.

As shown in FIG. 3, the venturi 31 is formed in the upper part of the side distribution pipe 26, and many venturi tubes 28 which discharge | release a polluted gas are connected.

The venturi tube 28 is shown only two groups in FIG. 2, which is conveniently configured in the form of a venturi nozzle, and forms a large number of inlets 29 in the venturi tube 28, so that the cleaning solution or washing is performed. Surround with solution 32.

The diffusion device is disposed above the venturi tube 28, respectively, which is made of an angle steel 30 in the form of an impact plate or a collision plate and supported by a support (not shown).

The dispensing device 14 is located in the cleaning solution 32 at a predetermined depth on the surface 34 of the cleaning solution, and in one embodiment of the apparatus, the venturi tube 28 is in the form of a venturi nozzle.

Most of the outlet port 31 of the venturi tube 28 is excreted at the same height and has a depth of at least about 0.5 m from the surface 34 of the cleaning solution, preferably about 2 m.

The inlet 64 for introducing the pollutant gas into each venturi tube 28 is sequentially disposed below the outlet 31 in a low order of about 1 m or more.

Due to the height difference, a satisfactory purifying effect can be obtained at each venturi tube 28 as long as the pollutant gas flows into the inlet 64 positioned downward of the venturi tube 28.

The contaminants are separated with the help of the cleaning solution sucked through the inlet port 29 while passing through the venturi tube 28 and classified into a bubble state by gas.

The cleaning solution bubble with this contaminant is sequentially attached to the inner wall of the discharge pipe 49 in the form of a liquid film and separated from the gas, and part of the cleaning solution gas passes through the discharge port 31 and the cleaning solution surface 34. Separated from.

A minimum predetermined height difference is required to satisfactorily separate the bubbles during the passage of the cleaning solution.

The present invention is not limited to the shape of the venturi nozzle as the discharge nozzle, and the gas discharged toward the impingement plate or the impact plate so that the gas passes through the cleaning solution in a fine bubble state is included in the use of the discharge pipe.

The height of the cleaning solution on the upper surface of the outlet 31 should be such that the bubble can sufficiently give time for contact with the cleaning solution, which is particularly applicable in another embodiment.

An essentially horizontal intermediate plate 36 is provided between the surface 34 and the outlet 16 of the cleaning solution, and a plurality of through holes 38 are laid in the intermediate plate 36 to form fine liquid bubbles and particles. In order to separate the separation device 40 is installed, this separation device 40 is schematically illustrated in the drawings.

In principle, the separator 40 is selected and used from a necessary type, and a cyclone apparatus is particularly preferable.

As shown in FIG. 4, the separated cleaning solution falls down the cleaning solution surface 34 through the vertical pipe 42. As shown in FIG. In order to prevent the gas bubble from directly falling into the cleaning solution, the vertical pipe 42 is blocked by a device such as a hood (not shown), for example, and introduced into the cleaning solution.

In addition, a separator for separating the particles and the cleaning solution bubbles is disposed in the usual way in the space 44 between the intermediate plate 36 and the tip of the outlet 16.

The outlet 16 may be sequentially connected to another purifier or discharged directly through a chimney, or to another discharger.

The gas purifier is operated in the following manner.

First, under no load conditions, the cleaning solution flows in through the inlet port 29, the inlet port 31 and the lower opening 32 of the venturi tube 28, and the internal cleaning solution of the separator 14 and the inlet pipe 12. Surface 46 has the same height as the outer surface 34 of the cleaning solution. At this time, the device has a liquid sealing function.

The next time breakage or accident occurs and the gas is released, the gas 46 flows into the apparatus and the pressure 46 increases, so that the surface 46 of the internal cleaning solution is lowered to the highest inlet of each venturi tube 28. Down the boundary 65 of 64, the inlet 64 is opened so that the gas passes through the venturi tube 28, at which time the gas flow is minute while the gas passes through the inlet 29. The bubbles of the washing solution rise to a nebulized state and rise. Solid and liquid contaminants contained in the contaminated gas are absorbed by the liquid bubbles sucked into the venturi tube 28 and are discharged to impinge on the impact plate or impingement plate 30 so that the bubbles are crushed into finer bubbles and washed. Is raised through the solution (32). At this time, the cleaning solution bubbles, dust particles and gaseous contaminants attached to the contaminants are further purified by the cleaning solution due to the bubble floating effect.

In addition, a part of the bubbles are separated from the inside of the discharge pipe 49 of the venturi tube 28 and attached only to the inner wall of the discharge pipe 49 with a liquid phase.

Thus, the separation or extraction of contaminants occurs in two steps.

That is, dust extraction in one step and absorption of gas and ions occur in the venturi tube and / or are caused by the impact effect by inertial force on the impact plate or impingement plate 30 installed above the venturi tube 28.

The dust extraction and absorption of the gas in the second stage is purged through the cleaning flotation effect, that is, absorption, sedimentation and / or diffusion while the bubbles pass through the cleaning solution toward the surface 34 of the cleaning solution.

Separation of contaminants in gaseous phase can be greatly improved by rapid chemical reaction, that is, by adding a cleaning liquid material that reacts with ions (so-called chemical activators) dissolved in the cleaning solution.

For example, the separation of acidic gaseous contaminants can be enhanced by adding a soluble alkaline component to the cleaning solution, and the absorption of gaseous oxo can be enhanced by incorporating sodium thiosulfate into the cleaning solution.

As described above, in this embodiment in FIGS. 1 to 3, a group of venturi tubes 28 are disposed at the same height in one and the same upper tube 24 to essentially remove this group of venturi tubes 28. It can work at the same time.

In addition, the upper tube 24 is disposed on the upper surface of the primary distribution pipe 18 to be different from each other, so that the group of the upper pipe 24 in one same annular distribution pipe does not have to operate at the same time.

7 to 9 show various forms of different embodiments of the dispensing device 14, each inlet 64 being connected to one outlet 31.

7 shows a portion of a dispensing device having a primary dispensing pipe 18.

A plurality of connecting pipes 23 extending vertically downward are in contact with the bottom of the distribution pipe 18, and each of the connecting pipes 23 is inclined downwardly on both sides to extend in a lateral direction. Piping 26 is connected and this side distribution pipe 26 serves as a secondary distribution pipe.

When each end of the lateral distribution pipe 26 extends vertically downward to the end 20, and the end of the short pipe 20 is opened to have an opening 22, condensate is generated in the same manner as in the above-described embodiment. The liquid is discharged through the opening 22, and when the flow amount of the gas decreases, the cleaning solution is introduced into the distribution device 14 through the opening 22.

A plurality of venturi tubes 28 are vertically welded upwardly and vertically at substantially uniform intervals to the upper surface of the lateral distribution pipes 26, so that the inlets 64 of the venturi tubes 28 are connected to the lateral distribution pipes 26. Excrete.

A plurality of suction ports 29 are installed at the lower end of the venturi tube 28 to suck the cleaning solution, and a plurality of discharge ports 31 are formed at the upper end to discharge the treated gas.

In addition, two short lateral distribution pipes 26 'are positioned higher than other lateral distribution pipes 26 in each zone so that the smooth operation starts without being impacted at the initial stage of operation in which the released gas is introduced into the apparatus. The treated gas is discharged at a position higher than the venturi tube 28. However, the depth of the short pipe 20 'extending vertically downward at both ends of the lateral distribution pipe 26' is equal to the depth of the other short pipe 20.

The distribution device 14 is arranged so that the lateral distribution pipe 26 is sequentially deepened, and accordingly, the inlet 64 of the venturi pipe 28 is also gradually deepened to increase the flow rate of the gas and increase the inlet pressure of the gas. The acceleration force is configured to continuously increase the number of actuations of the venturi tube.

FIG. 8 shows an embodiment which is slightly different from the embodiment of FIG. 7 in which the secondary distribution pipe is directly contacted with the primary distribution pipe 18 by the side distribution pipe 26 and the vertical connection pipe 23 is unnecessary. .

9 is an enlarged view of the venturi tube 28 in contact with the vertical upper connection tube 55 and the inlet 64 is opened above the lateral distribution tube 26. When moved to the next surface 46 ', the next positioned venturi tube 28 is actuated.

An embodiment of a venturi tube for use in the purification apparatus of the present invention is shown in FIG.

The venturi tube 28 is composed of an inlet 41, a narrowing portion 43 narrowing, a cylindrical throat 45, a conical enlargement portion 47 and a cover 51.

A plurality of outlets 31 are formed in the side immediately below the cover 51, and the upper portion of the lower end of the venturi tube 28 is formed with a threaded portion 53, which is connected to each side distribution pipe 26. The venturi tube 28 is coupled to the 55 by screwing.

An inlet port forming an annular groove 57 between the reduction portion 43 and the throat 45 and forming a sharp upper end portion 59 toward the tip side of the throat 45 and communicating with the annular groove 57. Several 29 are formed so that the cleaning solution flows evenly in the circumferential direction of the annular groove 57.

The annular groove 57 has a width of about 2-4 mm in the axial direction, and forms a sharp lower end portion 63 at the front end facing the reduction portion 43 side, and the radius of the tip end of the lower end portion 63 is It is about 0.5-1mm larger than the radius of the tip end of the upper end part 59, and the wall surface of the reducing part 43 is tangentially connected to the lower end part 63, and an annular groove (at this end part 63) is formed. 57).

As the gas passes through the venturi tube 28, the cleaning solution is sucked into the annular recess 57 and atomized in the form of bubbles of fine cleaning solution near the upper end portion 57.

Contaminants contained in the gas are adsorbed to the cleaning solution bubbles while passing through the throat 45, the conical enlargement 47 and the discharge pipe 49. Therefore, the venturi tube 28 serves as a venturi type separator that sucks itself.

According to the present invention, the amount of cleaning solution, for example, water, sucked into the venturi tube 28 through the suction port 29 is at least 0.5 kg, preferably 2-3 kg, per unit cubic meter of the gas to be treated.

Therefore, the size of the suction port 29 and the annular groove 57 should be determined so that the predetermined amount of cleaning solution can be sucked by a predetermined pressure drop. In addition, the pressure drop is determined by the height difference between the inlet 64 and the outlet 31, and in most cases, the pressure drop should be 1 m or more in order to satisfactorily purify the polluted gas, such as 99%. In order to achieve the purification efficiency, there must be a pressure drop of 104 Pa corresponding to 1 m order in the Venturi tube.

The diameter of the throat of the venturi tube in the present embodiment described above is about 10 mm, the diameter of the discharge tube 49 is 26 mm, and the diameter of the throat should not exceed about 30 mm in order to obtain high-precision purification.

4 and 5 show another dispensing device 14 ', which is provided with a cylindrical dispensing chamber 52 in the center, and the dispensing chamber 52. A primary distribution pipe 54 is installed on the circumferential wall of the mutually inclined height so as to extend upward, and the distribution pipe 54 is connected to a distribution body 56 radially inwardly installed. The secondary distribution pipe 58 extending horizontally to both sides of the 56) is installed in sequence.

The above-mentioned venturi tube 28 is installed upward on the secondary distribution pipe 58, and the impact plate or crash plate 30 shown in Figs. 1 to 3 is provided above the venturi tube 28.

In this embodiment, the length of the venturi tube 28 becomes short. This is because the inlet 64 is lowered by being located in the distribution chamber 52, but the venturi tube needs a minimum length in order to obtain an effective purification effect.

The gas purification apparatus shown in FIG. 4 and FIG. 5 is divided into several zones by the partition 60 extended radially, The upper part of this partition 60 contacts the intermediate plate 36, The lower part is It extends below the position of the venturi tube 28, and the partition wall 60 extends inwardly to the gas inlet pipe 12, and outwardly extends to the outer wall 10 of the apparatus. .

In addition, a guide plate 48 is provided adjacent to the outer wall 10 in the circumferential direction, and an upper end portion of the guide plate 48 extends above the surface 34 at the time of non-operation of the cleaning solution, and the lower end portion is provided with the apparatus. Of the bottom face 11 is installed close. In addition, the partition wall 60 extends to the inside of the slot-shaped space 50 to securely fix the guide plate 48. However, such a configuration is not necessary for the function of the purification device, and the guide plate 48 may be fixed to a plurality of support pieces fixed to the outer wall 10.

The lower end of the primary distribution pipe 54 is connected to mutually different positions on the outer circumferential wall of the distribution chamber 52, and the gas inlet 64 is formed in this, and the gas in each zone is provided with the inlet 64 which becomes such a different position. As the inlet pressure increases, it is operated in stages.

That is, the surface 46 of the internal cleaning solution is pressed down by the inflow of the contaminated gas, and the gas inlet 64 is opened to be introduced therethrough, thereby allowing the primary distribution pipe 54, the distribution body 56, and the secondary distribution pipe 58 to flow therethrough. ) Through the venturi tube 28 in contact with the upper surface of each of the secondary distribution pipe (58).

Due to the height difference between the surface 46 of the internal cleaning solution and the secondary distribution pipe 58, the venturi pipe 28 has a pressure drop corresponding to the height difference, whereby the polluted gas is discharged from the venturi pipe 28. This flows to the pressure drop described above, which is to be atomized with excellent purification effect and fine bubbles.

In addition, because of the above-described manner in which the gas inlets 64 are arranged at different positions from each other, one zone is operated as a complete purification effect and then automatically operated to another zone. Such a configuration is very important for the effective extraction of contaminants. In other words, the inertial effect depends on the speed of the gas, so that the lower the speed of the gas, the poorer the separation of pollutants.

In addition, since the concentration of the cleaning solution reduces the effect of generating bubbles, the purification zone 66 which is actively operated is set so that the cleaning solution surface 34 'is set higher than the other zones. This surface 34 'is set above the upper end 68 of the guide plate 48 so that the cleaning solution is circulated from the zone 66 to the zone where the pollutant gas is supplied and operated. In other words, this is partially localized by the local concentration of contaminants to compensate for the consumption of additives contained in the cleaning solution in the active zone.

6 is an enlarged cross-sectional view showing a plurality of slanted thin plates 74 inclined inside the slot-shaped space part 50, and is formed by inclined up and down obliquely by the settled thin plates 74. ) Will produce a large number.

When the bubble 76 is introduced into the cleaning solution filled in the inclined chamber 72, the bubble 76 rises along the lower surface of the settled thin plate 72, and at this time, the contaminated particles 78 are separated from the thin plate ( The bubble 76 continues to rise to the cleaning liquid surface 34 or the cleaning liquid surface 34 'while being settled on the upper surface of 72).

The contaminant particles 78 accumulated on the upper surface of the thin plate 74 are moved downward accordingly because the thin plate 74 is inclined, and eventually the bottom 11 of the container 10 from the lower end 80 of each thin plate 74. ) To fall.

The installation of the settling thin plate 74 causes the cleaning solution to circulate laterally, thereby preventing the cleaning solution from circulating only in the same zone to compensate for the local consumption of the additive of the cleaning solution.

In addition, a heat exchanger (not shown) may be disposed to cool the cleaning solution in the gas purifier of the present invention or to heat it in some cases.

In addition, the volume capacity of the container 1 should be large enough to accommodate the condensed water and the extracted solid particles generated when the equipment connected to the apparatus is operated in the event of an accident.

The device is a discharge valve 84 installed at the bottom of the container 1 and normally closed when the gas generated in the apparatus industry is treated, and a pipe is provided with a plurality of valves in front and rear to discharge condensed water and extracted particles. There is a number.

In addition, the impact plate or the collision plate may have another shape. For example, a plate having a large number of holes perforated above the discharge port 31 may be disposed to effectively and evenly disperse the bubbles generated on the entire surface of the cleaning solution, thereby allowing the container to be discharged. The capacity of can be used more effectively.

In addition, in some cases, the upper part of the container 1 may be opened. In this case, the outer wall 10 should be made sufficiently high to prevent the cleaning solution from splashing and overflowing to the outside. In order to achieve this, a separate device such as a grid or filter device and / or a filter bed for filtering static or fluidized particles installed above or below the surface of the cleaning solution should be additionally installed.

In addition, the guide plate 48 can also be installed at another position in the container 1 to form a slotted space part 50. For example, a pair provided near the radial partition wall 60 or having a space part 50 is provided. The partition wall may be provided between the partition walls 60.

Although not essential, it is convenient to install between different zones 66, or to a site where the distribution pipes 18 and 54 can be interposed to perform a function.

The container 1 does not have to be circular, but may be, for example, in another form that meets the local conditions to be installed, which may be rectangular or irregular.

In addition, the inlet pipe 12 may also be installed at a different position in the container, for example, it may be installed symmetrically on the cover 13, or may be installed through the outer wall 10 or the bottom face 11.

However, it is important at this time to connect the dispensing devices 14, 14 ′ to a position above the highest inlet 64.

The venturi tube 28 can also be installed in other ways in conjunction with the gas inlets of the distribution devices 14, 14 ′. That is, in some cases, the venturi tube 28 may be horizontal or drained to give the most suitable function to the distribution tubes 26, 58 and the primary distribution tubes 18, 54, 56. It may be installed slightly inclined. In addition, the venturi tube 28 may be longer than the height shown in FIG. 4 so that the cleaning solution bubbles sucked from the suction port 29 can effectively pass a sufficient distance. In addition, the purification of the polluted gas as the venturi effect is more effectively performed by the distribution, collision and floating effects.

The gas purifying apparatus of the present invention can be operated by being separated from each other independently of a predetermined size and a plurality of distribution apparatuses 14 and / or distribution apparatuses 14 '.

Further, a plurality of gas purifiers may be installed to be disposed in a group or may be disposed at a distance from each other.

In the latter case, it is convenient to maintain and maintain the pipe, for example, and some of the devices may be suspended for maintenance and only some of the devices may be operated.

Since the gas purifier of the present invention has a large scale, when it is installed as an emergency apparatus of a nuclear power plant, its area is about 50-100 m 2, and the diameter of the apparatus is 10 m or more.

The amount of the initial cleaning solution should be determined in consideration of the loss amount, and when the amount of gas discharged is 150 ° C., about 10kg / sec, the loss of water is 1.0-3.5㎥ / n and the evaporation loss is further increased.

The embodiments of the present invention are not intended to limit the present invention and, for example, the technical details of the parts described in the drawings and / or embodiments of the present invention may be viewed in a predetermined manner constituting the gas purifying apparatus of the present invention. Although many types of inventions can be made, they are within the scope of the following claims.

Claims (10)

A method of purifying a gas by generating bubbles by passing a gas containing solid, liquid, and / or gaseous contaminants into the cleaning solution 32, wherein the inlet gas is passed to the distribution devices 14 and 14 '. The number of inlets 64 drawn in and excreted to a depth gradually increasing below the surfaces 34 and 34 'of the cleaning solution increases the number of openings of the inlets 64 at an equivalent pressure of the incoming gas. As a result, the flow rate of the incoming gas is also increased, and the gas passing through the inlet 64 flows in the same flow regardless of the gas inlet pipe and the total flow, and passes through each of the inlets 64. The flow passes through the connecting means 24, 26, 28, 54, 56, 58, respectively, at the outlet 31 located higher by a height difference h than the corresponding inlet 64. Between the dispensing device 14 and the cleaning solution surface 46 inside the 14 '. The gas purification method, characterized in that configured to pass through the washing solution 32 is discharged to the pressure drop corresponding to the height difference (h). 2. The venturi tube according to claim 1, wherein the connecting means includes a component for increasing the speed, such as a venturi tube (outlet nozzle) 28, while the gas is passed, thereby contracting the gas flow to increase the speed. And a cleaning solution is sucked through the plurality of suction ports (29) formed to be surrounded by the cleaning solution (32) on the wall surface of the gas cleaning method. The gas fraction discharged from the outlet port collides with the means (collision only or output only) 30 installed in the cleaning solution 32 so that each gas fraction is divided into fine bubbles. And a contaminant is separated into the cleaning solution while passing through the cleaning solution. Partially filled with the cleaning solution or the cleaning solution 32, the inlet pipe 12 through which the contaminated gas is introduced, and is disposed to a depth gradually increasing below the surfaces 34 and 34 'of the cleaning solution, and the polluted gas. Dispensing apparatuses 14 and 14 'provided with a plurality of inlets 64 for introducing the gas, a container 1 comprising an outlet 16 for discharging the purified gas, and the dispensing apparatus 14, ( 14 '), the surface 46 of the internal cleaning solution is increased with an increase in the inlet pressure of the gas, and then sequentially opens the inlet 64, which is excreted to a gradually increasing depth, through which gas passes through Extends from the inlet 64 of the cleaning solution and is installed below the surfaces 34 and 34 'of the cleaning solution and discharges the fraction of the pollutant gas located higher by the height difference h than the corresponding inlet 64. The connecting means (24, 26, 28, 54, 56, 58) installed between the outlet 31 to the A gas purifier configured to pass contaminated gas and to perform the method of claim 1, 2 or 3. 5. The cleaning device as set forth in claim 4, further positioned and cleaned below the lowest inlet port (64) for gas flow to the distribution tube (18) and / or the distribution chamber (52) of the distribution means (14) and (14 '). Gas purifier, characterized in that the opening formed in the solution (32) is formed 22. 6. A method according to claim 4 or 5, wherein a majority of the plurality of outlets 31 are essentially disposed below the surfaces 34, 34 'of the cleaning solution and / or the outlets 31 and respectively The height difference h between the corresponding inlet 64 is approximately 1 m or more and / or the outlet 31 is at least 0.5 m downward from the surface 34 of the cleaning solution, preferably about 2.0 m. gas purifier, characterized in that it is located at m and / or configured to excrete most of the outlet 31 at a predetermined height or the same height. The method of claim 4, wherein the discharge port has a characteristic of separating particles as in the form of a venturi tube (venturi nozzle) 28, a plurality of suction ports 29 are formed on the wall thereof so that the cleaning solution 32 is A gas purifier, configured to surround. 5. The container (1) according to claim 4, wherein the container (1) is partitioned into several zones by radially extending partitions (60), the partition walls (60 ') being operated from below the outlets upon operation of the cleaning solution. The gas purifier, characterized in that installed in the upper position, preferably installed adjacent to the intermediate plate (36). 5. A pair according to claim 4, wherein one or more guide plates (48) in the container (1) are in close proximity to the outer wall (10) of the container (1) or in close proximity or opposite to the radial bulkhead (60). Installed to form a slot-shaped space 50 so that the cleaning solution located at the lower end of the container 1 is recycled so that the cleaning solution is moved upward, and the one or more guide plates 48 The upper end is positioned so that the cleaning solution is located above the non-operating surface 34, and does not exceed the upper part of the operating surface 34 ′ and / or the lower end of the guide plate 48 is lower than the discharge pipe 28. And / or inclinedly disposed a plurality of settling thin plates (74) in at least one or more of the slotted space portions (50). The cleaning apparatus according to claim 4, further comprising: separating means for separating contaminants remaining in the bubbles of the cleaning solution treated above the surfaces 34 and 34 'of the cleaning solution, and the container is provided with at least one outlet ( 16, which consists of a closed container 1 having a cover or cover 13 having a cover 13, wherein the intermediate plate 36 is provided above the surface 34 'of the highest cleaning solution and is disposed between the outlet 16 and the outlet 16. A space 44 is formed in the intermediate plate 36, and a plurality of through holes 38 are formed in the intermediate plate 36, and the separation means 40, such as a cyclone, is installed thereon so that the vertical pipe 42 is disposed at the lower exit thereof. Extends below the cleaning solution surface (34) to separate fine cleaning solution bubbles and particles.

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